Bolt or rivet machine



(No Model.) y

' J. MORGAN.

BOLT 0R RIVBT MACHINE.

l 4Patented"Fabl 12, 1&884.

ilnirno @raras PATENT I @Brione JAMES MORGAN, OF PITTSBURG,PENNSYLVANIA.

, 'BoLToR'RwETMAcr-HNE.

SPECIFICATION forming part of Letters Patent No. 293,348, dated February12,1884. Application inea May 1 4, iets. (No model.)

To allnuhom it may concern:

Be it known thatI, `JAMES MORGAN, a citi-` zen of the United States,residing at `Pittsburg, in the county of Allegheny, State ofPennsylvania, have invented'or discovered a new and useful Improvementin Bolt and Rivet Machines 5 and I do hereby declare the following to beafull, clear, concise, and exact description thereof, reference beinghad to the accompanying drawings, making a part of thisspecification, inwhich-like letters indicatin g like partsi Figure l is a top `plan Viewof my improved machine, and Figs. 2, 3, and 4 are similar views ofthedie-carrying head and shaft and the mechanism employed for operating thedies. .i My present invention relates to certain improvements in thatclass of bolt and rivet machines for which Letters Patent of the -UnitedStates were granted to me October 26, 1880,

No. 233,685, and July 11,1882, No. 261,022,

feeding position as againstmotion` in eitherdirection while the feedingis done, as herein-` after more fully described and claimed.

In'Fig. 1 of the drawings I have illustrated a general plan of myimproved machine, manyA of the details of which are substantially likethe machine shown in Patent No. 261,022,` above referred to. In thisfigure, A repre-i` sents the main frame. line of this frame is journaleda short shaft, S, by `box S2. 'On one end of this shaft is secured aradially-mortised head, S, carrying in its` mortises dies s, havingtubular die-cavities s' therethrough,one in each die. ceive motion fromshaft S', as hereinafter described, whereby they are brought in succes-A sion in front of or in line with the feed-tube C,

the die-cavities being in such position `in line-` thetubular passagethrough that the In or near the central These dies rerod passed endwisethrough the tube will also pass through the die-cavity and against astop, N, also set in the line of feed on the side of the dies oppositethe feed-tube.

Before describing the several functions of tlese several parts, andtheir several movements by which such functions are performed,

4I will describe, briefly, other parts of the machine, whicharesubstantially like thecorrespondingpartsinPatentNo.,261,022. i Amongthese parts are the feeding, the heading, the discharging, andthe stopmechanisms. Feed i is imparted automatically by two rolls, D, journaledin upright's or housings D. The rolls are connected by gearing D2, so asto take movement together. Intermittent feed or rotary movement is giventhem by a Vibrating arm, E, extending downward from the eX- tended shaftD3 of one roll, connection being made therewith by an ordinaryratchet-clutch, e, or by other suitable clutch mechanism such thatvibration ofthe arm may give the shaft intermittent rotary movement inone direction. From the lower end of arm E a pitman-bar, E', makes pivotconnection with one arm of a rocking crank, El, and fromthe other arm ofthis crank a similar pitman-bar, E3, makes connection with the wrist Bon the-end of driving-shaft B, whereby continuous rotary motion of thedriving-shaft gives reciprocating motion to theApitman-bars, vibratingarm E, and j giving feed-motion to the rolls, as stated. i The stop`N,,which arrests forward feed of the rod, thereby securing uniformlengths of blanks, is

adjustably secured in the end of its supporting-bar N by screw n,whereby the stop may be set for` different lengths of blanks.

In order to move the stop out of contact with the end of the blankpreliminary to moving the dies, the bar N is pivoted to a standard, vN,as at of, and its outer end rests upona cam, N2, secured on thedriving-shaft, so that each rotation of the shaft and cam lifts theouter end of the bar and dips or depresses the stop. The header K isplaced on the right-hand side of the bed, its distance from thefeed-tube C being equal to the distance between successive dies s, orbeing some multiple thereof, so that when one die is in feeding positionto receive a blank, anotherfdie Vmay be in position to be operated onbythe header. Y This header IOO being operative in upsetting the endl oftheblank protruding from the adjacent end of the" die. The blank issupported as against the pressure of the header by an anvil-pun`cl1,i,carried by sliding block I. The punch is Withdrawn by a spring, I', andis pressed forwardY into the flaring or bell-mouthed end s2 of the`die-cavity by va sliding wedge, I2., actuated by pivoted lever I3 andcam I4. This movement of the punch is designed to move the blank endwisein the die-cavity, carrying its end out of the flaring portion s2, whichlatter feature is provided to facilitate entry of the rod into thecavity in feeding. against the end of the blank by the wedge I2 untilthe header has completed its work, when both the header and punch arewithdrawn by their respective springs, K3 and I, I l

On the left-hand side of the frame, corresponding to one position ofrest of the' dies, is.

mounted adischarg'ing-punch, w. This punch is carried iny horizontalreciprocating movement into and out of the die-cavites to discharge thearticle therefrom by a sliding plate or frame, W, which is secured bysuitable guides on thebed ofthe frame, and is actuated by a spring, V3,and bya cam on the drivingshaft pressing upon ahead or yoke, W2, whichlatter is connected by stem W to the frame or plate W.

In the operation of the machine the feed'- ing, heading, and dischargingoperations are performed simultaneously, or nearly so, While the diesare at rest. l It is of great importance in this connection that whilethese operations are being performed the dies should be held firmly inposition as against movement either forward or backward, in order thatthe several parts of the machine may operate properly in connectionwiththe dies; also, that in shearing the cut should be made in part fromeach side, front, and back, in order to avoid fins on the edge of therod and blank.: This is of special importance, not only to preventobstruction to proper entry ofthe rod into the die-cavities in feeding,but also to prevent bending the end of the blank when pressed againstthe stop N. If a projecting edge is made on one side by an inclined cutacross the rod in one direction, there is a decided tendency therein tobend or be deliected out of the true vline of feed under endwisepressure between the stop and the feed-rolls, the rod being heated andvery pliable. If the protruding end of the blank is thus bent, aone-sided head is y formed in the heading operation 5 also in suchheading operation on a bent blank there isa marked tendency to move thediesusually backward, depending upon the direction of bend, and thisbackward or moving pressure upon the dies interferes 'more or less withtheffeeding' The punch is held operation, not only by pressure andfriction upon the moving` rod, but also by tending to bend it, therebyincreasing the trouble, caused in the first instance by an improper cutin shearing the blank from the rod. These difficulties are4 obviated inmypresent invention by shearing the blank from the rod, as in my priorpatent, No. 261,022, by first moving the v 'die backwardpartially-Tsay'halfway-across the feed-passage, thereby making a cutinto tlievro'd from one side, and then moving the die entirely acrossthe feed-passage in the opposite direction to completely sever theblank,

and, inaddition to this, I make provision for holding the dies rigidlyand firmly against charging is done, so that not only is easy feed and astraight blank secured, but also perfect,

full-sided, and 'well-shaped heads, this latter feature being securednot'alone by the straight form of blank, but also by' preventingmovement of the dies un'der'the force applied in heading. In. securingthese. several advantageous results, I make use of a disk or wheel, R,secured on the outer-end of shaft S', such wheel having on its outerside face a series of pins or studs, 1" if r3 of, set at uniformintervals in circular order around the axial center.

`These pins work in cam-grooves formed on A the periphery of a wheel, R,secured on driving-shaft B.Y About one-half the circumference of thiswheel It is occupied by a groove, a, straight or parallel with the planeof the wheel within which some one of the pins (r3, as shown) is heldwhile the feeding, heading, and discharging operations are performed. Asthis groove a is in and parallel with the plane of rotation of thewheel, rotary motion of shaft S willv be effectually prevented so longas one 'of the pins is in the groove. The remaining part of theperiphery of wheel R is occupied by ca'ms and grooves inclined acrossits peripheral face, designed to act upon movement in'either directionWhile the feeding is' done and while thepheading and dis- IOO IIO

and give rotary movementA to the pins and to the shaft carrying thedies: These inclined cams and grooves consist of an inclined groove, a',crossing the face of the wheel at or leading to one sidethe leftsidefrom one end of the straight groove a. A correspon'dingly-inclinedcam, c, forming one wally of ygroove a, also crosses the face of thewheel in the same direction, and is extended somewhat .on the left-lhand side'by a curved piece, c', secured therelto by screw c3,- also, acam, c2,is extended to the right-hand side, parallel, or nearly so, withcam c, and separated therefrom by an inclined groove, a2, leading fromthe right-hand side of the Wheel, past thecam c2, tol the plane or lineof straight groove a; also, an inclined groove, a3, leads from theleft-hand side across the ends of grooves a a2, emerging on therighthand side, as at a4.

' In operationa pin directly below the axis, as pin r3, takes the groovea'luntil in the rotation of wheel It such pin enters the4 groove c',when it crosses the face of the wheel through arias/is g e the lattergroove, while other pins above the axis cross in opposite directionthrough the groove a3 at.

In Figs. l and 2 I have shown the pinr3 below theaxis of S entered inthe straight groove ci, the wheel R being turned a little farther inFig. 2 than in Fig` l, for the purpose of shwing better the inclinedcams and grooves which first act upon the pins.

In the order of operation the side extension, c', of cam c first actsupon or presses the inner side of pin r (above the axis S) just as pinr3 (below the axis) emerges from groove a. This pressure of cam c movesthe pin and its shaft back from right to left, lthus giving the backmovement of the dies partially across the feed-passage to partly severthe blank. In order to clear the pin r3 for this movement, the side wallbetween groove a and cam c is cut away, as at a5, so that pin r mayenter this recess or cut in the wall as it is moved backward. This backmovement is comparatively small, by preference such as to move the diesabout half-way across the feed-passage. Its

- extent may be varied` to advantage with rods of different size, andfor this purpose the campiece c is made `removable by the screwattachment c3, above described, so that interchange may be made withother parts or pieces of different degree of lift or curve. As the pinr' turns the rounded face of cam c', the pin r3 below is pressed by theinclined cam e, (see Fig. 3,) thereby moving the wheel R in thedirection indicated by the arrow, carrying the die entirely across thefeedpassage toward the header, thus completing the shearing operation.

Owing to the limited width of space available between the pins r r2,duc., for the wheel It', I prefer to complete the forward movement oftheA dies-amounting in the present instance to a quarter-rotation plusthe amount of back movement at first given-by engagement of cam cl uponpin fr", which is moved into position thereforas the pin r3 approachesor reaches the swell of cam c. This cam ci is in edect a continuation ofcam c, though detached therefrom, so as to be operative upon anotherpin, and by its pressure upon such pin it continues and completes thedesired forward movement yof the dies, carrying one to the header andmoving another into feed- Y ing position.

As the cam c acts upon pin r3, the pin i, which has turned rthe swellof. cam c', takes into the groove a3, (see Fig. 4,) and, crossing theface of the wheel, emerges from groove a* on the right-hand side of thewheel. The pin o, under pressure of cam-c2, is carried to the centralplane of the wheel in position to take the straight groove a when thedie movements are complete, and thereby hold them firmly against eitherforward or backward' movement while the feeding, heading, anddischarging operations are being performed.

Upon completion of the set of movements above described the pin /r willbe on the right, `having `emerged from groove a (1*, the pin r2 will bein the central plane of the wheel, hav- `ing emerged from groove a2, thepin r3 will be on the left, having emerged from groove a, and pin of,which was not used in the preceding movement, is brought into positionto engage cam c and to perform the same functions in the next set ofoperations as were performed l by pin r in the preceding set, so that insuch second or succeeding operation the pins operated on will be firstr* by cam c', second lr2 by cams c c combined, and third r by cam c2.

The number of pins provided on the wheel R may be increased ordiminished, depending f upon the number of dies carried by shaft S andthe fractional part of a rotation which is to be given at eachoperation, and such variations in number I consider as coming within myinvention. I prefer, however, to use four dies and four pins, a-nd togive the die-carrying shaft a quarter-rotation at each step plus theamount of back movement at first given for shearing.

I claim hereinas my invention- 1. In a bolt and rivet machine, thecombination of feed-tube C, dies s, in any desired number, such diesbeing movable, backward to partially sever the blank, and then forwardto completely sever the blank, and a device, substantially as described,which gives such backward and forward movements to the dies and holdsthem in positions of rest thereafter against movement in eitherdirection.

2. The die-carrying shaft S, in combination with wheel R, having pinsprojecting from its side face, and wheel R, having cams and grooves onits periphery engaging with the pins on wheel R, substantially as andfor the purposes set forth.

3. The combination of a die-carrying shaft, a wheel secured thereonhaving pins proj ecting from its side face, and a wheel having on a partof its periphery-face a groove parallel with the plane of the Wheel, andonthe 4remaining part of such periphery having inclined cams andgrooves, substantially as set forth.

4. The combination of die-carrying shaft S', wheel R, having pinsprojecting from its side face, driving-shaft B, and wheel R, the latterhaving on its periphery-face straight groove a, inclined grooves a" a2a3 and inclined cams c c ci, substantially as and for the purposes setforth.

5. The combination of die-carrying shaft S', disk or wheel R, havingfour pins, i" r2 r3 r4, on its side face set in circular order about theICO iro

axis of the shaft, and wheel R', having on the dies both backward andforward to sever piece c', substantially as and for the purposes ro setfort In testimony whereof I have hereunto set the blank and carry thedies in succession from the feeding to the heading positions, and forholding the dies during the feeding and headmy hand.

inO operations from movement either forward orbbaekward, as set forth.JAMES MORGAN 7. The wheel R', having` straight groove a, l Witnesses:

R. H. WHITTLEsEY, C.' L. PARKER.

inclined grooves a, a2, as, and a4, and inclined cams c c2, inCombination with removable cam-

